Liquid crystalline substrates for culturing cells
The present invention is directed to liquid crystalline substrates useful in the culture of cells and methods of their use. In certain embodiments, the invention provides methods and devices for imaging changes (e.g., reorganization) of extracellular matrix components by living cells.
1. A cell culture substrate upon which cells are cultured, comprising:
(a) an aqueous phase;
(b) a liquid crystalline phase wherein an interface is formed between the aqueous phase and liquid crystalline phase; and
(c) a protein or peptide layer positioned at the interface, wherein the protein or peptide layer is an extracellular matrix component.
2. The cell culture substrate according to claim 1 wherein the protein or peptide layer comprises gelatin, laminin, collagen, elastin, or mixtures thereof.
3. The cell culture substrate according to claim 1 wherein said protein or peptide layer comprises a synthetic polypeptide.
4. The cell culture substrate according to claim 1 wherein the liquid crystalline phase is a liquid crystal elastomer.
5. The cell culture substrate according to claim 1 , wherein the interface comprises a polyelectrolyte multilayer (PEM) film incorporating the protein or peptide layer.